Capacitive Fuel Level Sensor
The Capacitive Fuel Level Sensor (CFLS) is a high-accuracy fuel monitoring solution engineered to deliver precise, real-time measurement of diesel levels in generator tanks, bulk storage systems, and industrial fuel management applications. Utilizing advanced capacitive sensing technology, the CFLS provides stable, drift-free readings without the use of mechanical moving parts—ensuring long service life, superior reliability, and minimal maintenance requirements.
Built to perform in demanding industrial and telecom environments, the CFLS is ideal for applications where accurate fuel tracking is essential for improving operational efficiency, preventing fuel pilferage, and enabling data-driven maintenance planning. Its rugged design and consistent measurement capability make it a dependable choice for telecom infrastructure, power generation systems, and mission-critical energy management deployments.
Construction Details:
- Rugged, corrosion-resistant metallic probe designed for long-term immersion in diesel fuel
- Capacitive sensing element with no mechanical moving parts, ensuring high reliability
- Fully sealed construction with IP65 protection against dust and moisture ingress
- High-quality internal electronics with industrial-grade components for stable signal output
- Integrated signal conditioning and calibration circuitry for accurate measurement
- Designed for vertical mounting in fuel tanks with customizable probe lengths.
- Compatible with metal and non-metal fuel tanks
- Manufactured under controlled quality processes with full electrical and functional testing
Benefits:
- High Measurement Accuracy: Provides precise fuel level data with ±1% accuracy
- Long Service Life: No moving parts eliminate mechanical wear and calibration drift
- Reliable Performance: Stable operation across wide temperature and humidity ranges
- Easy Integration: Supports standard communication interfaces for seamless system integration
- Low Maintenance: Maintenance-free design reduces operational cost
- Customizable Design: Available in multiple probe lengths to suit different tank sizes
- Improved Fuel Monitoring: Enables theft detection, consumption analysis, and remote monitoring
Parameter | Specification |
Operating Voltage | 12 V / 48 V DC |
Operating Temperature | –20°C to +85°C |
Operating Humidity | Up to 95% RH (Non-condensing) |
Ingress Protection | IP65 |
Sensing Principle | Capacitive |
Measurement Range | 160 mm to 1000 mm (customizable) |
Measurement Accuracy | ±1% of full-scale |
Output Signal | RS-485 (MODBUS RTU) / Analog (0.5–4.5 V) / Analog (0.5 to 4.5 VDC) |
Communication Protocol | RS-485, MODBUS RTU |
Calibration Method | Handheld device / Mobile application |
Tank Compatibility | Rectangular |
Mounting Orientation | Vertical |
Construction Material | Aluminum / SS housing (application dependent) |
Operating Environment | Indoor / Outdoor (IP65) |
Applications:
- Diesel Generator Sets (DG Sets)
- Telecom tower fuel monitoring systems
- Data centers and backup power systems
- Industrial fuel storage tanks
- Fleet and logistics fuel monitoring

